SWRZ097D April   2020  – November 2022 AWR6843

 

  1. 1Introduction
  2. 2Device Nomenclature
  3. 3Device Markings
  4. 4Usage Notes
    1. 4.1 MSS: SPI Speed in 3-Wire Mode Usage Note
  5. 5Advisory to Silicon Variant / Revision Map
  6. 6Known Design Exceptions to Functional Specifications
    1.     MSS#25
    2.     MSS#26
    3.     MSS#27
    4.     MSS#28
    5.     MSS#29
    6.     MSS#30
    7.     MSS#31
    8.     MSS#32
    9.     MSS#33
    10.     MSS#34
    11.     MSS#36
    12.     MSS#37B
    13.     MSS#38A
    14.     MSS#39
    15.     MSS#40
    16.     MSS#41
    17.     MSS#42A
    18.     MSS#43A
    19.     MSS#44A
    20.     MSS#45
    21. 6.1 MSS#50
    22. 6.2 MSS#51
    23.     ANA#11B
    24. 6.3 ANA#12A
    25.     ANA#13B
    26.     ANA#14
    27.     ANA#15
    28.     ANA#16
    29.     ANA#17A
    30.     ANA#18B
    31.     ANA#19
    32.     ANA#20
    33.     ANA#21
    34.     ANA#22A
    35.     ANA#27A
  7. 7Trademarks
    1.     Revision History

ANA#11B

TX, RX Calibrations Sensitive to Large External Interference

Revision(s) Affected:

AWR6843 ES 1.0 and AWR6843 ES2.0

Description:

External interference present on the RX or TX pins, during the period of the device calibration at RfInit, can lead to degraded accuracy or errors in the calibration results. If the interference changes its level while these calibrations are actively running, the calibration algorithm may interpret this as a change in signal power, leading to incorrect convergence. This applies to boot-time PD, Rx IQ mismatch calibration, Rx gain calibration, Tx power calibration, and phase-shifter calibration.

Workaround(s):

Workaround is to save the boot time calibrations at production (done in a clean environment without interference) and during operation, the calibrations can be restored.